John Edeh
I ship SaaS products end to end — architecture, backend, frontend, and the infrastructure they run on.
I fix production, then I build the next thing.
Mechanical engineering graduate turned production infrastructure and SaaS builder — I run the servers and write the code that runs on them.
John Chinonso Edeh is a Full-Stack and DevOps Engineer in Lagos, Nigeria.
He runs production infrastructure for The Punch Nigeria Ltd, the country's largest news publisher — a self-managed Docker / Nginx / PHP-FPM / MySQL / Redis stack on AWS serving 23M+ pageviews a month. Recent work: root-caused a full-site 504 outage down to a memory-limit conflict between two unrelated commits and fixed it live in 15 minutes; found and closed a reflected XSS vulnerability; cut editor publish latency from 40+ seconds to normal by tracing three blocking calls through New Relic; stopped a 15,000-request sitemap-scraper stampede that was taking the site down nightly.
In parallel he ships his own products end to end — architecture, backend, frontend, and the infrastructure they run on. Multi-tenant SaaS with dual deployment modes, marketplace platforms with real-time negotiation and FIFO cost engines, e-commerce with live Stripe payments. Production systems used by real businesses, not tutorials.
Available for collaborations
Looking for a DevOps-savvy Full-Stack engineer?
Featured Work.
A selection of production-grade platforms where I've managed the complete lifecycle — from database schema to cloud deployment.
$ deploy --project apoquiz
HTTP/2 200 OK
Apoquiz
Ran the Bible Giant 2026 final live: 567 audience, 105 questions, 88 min, LAN or internet
$ Ran the Bible Giant 2026 final live: 5 teams, 4 rounds, 105 questions and 567 audience members over 88 minutes, with final standings and per-round scores recorded by the platform.
$ deploy --project xfinance
HTTP/2 200 OK
XFinance
Multi-Tenant Finance & Accounting SaaS
$ Dual deployment architecture — DEPLOYMENT_MODE=saas enables full multi-tenancy with subdomain routing and super admin; standalone mode bypasses subscription gates for single-client on-premise deployments
$ deploy --project insights-connector
HTTP/2 200 OK
Insights Connector
Hosted MCP server that lets AI assistants read GA4 and Search Console, read-only, per user
$ 9 read-only MCP tools (4 GA4, 4 Search Console, 1 account) behind a single wrapper: auth, entitlement, rate limit, Google token, call, error mapping, usage log. No tool can bypass it, so every call is enforced and audited identically.
$ deploy --project maville-laptop-search
HTTP/2 200 OK
Maville Laptop Search
Intent-aware laptop search: a 16GB query returns 23 more usable options across 112 laptops
$ On real inventory a 16GB search went from 77 results to 77 exact + 23 upgradeable laptops, ranked after exact matches and labelled "8GB -> 16GB" or "ask us" when the maximum RAM is not recorded. I chose to surface upgrade paths rather than pad results, so the label never promises what the data cannot back.
$ deploy --project fondlyheld
HTTP/2 200 OK
Fondly Held
Group cards and tribute pages: 10 occasions from one Board model, zero-signup contributing
$ 12 tables and 5 additive migrations, 10 occasion types x 3 themes seeded as rows: one Board model with tone as data (celebratory / warm / solemn), so a new occasion is an insert, not a deploy, and memorial boards cannot receive confetti by construction.
$ deploy --project recurring-billing
BUILD IN PROGRESS
Recurring Billing Platform
Naira recurring-billing engine on Paystack: auto-debit, invoicing, dunning and payout splits
$ 12 tables with uniqueness constraints as the idempotency backbone (one invoice per client per period, unique payment references, unique webhook event keys): duplicate webhooks, cron re-runs and concurrent callers cannot double-settle.
$ deploy --project place-of-treasure
HTTP/2 200 OK
Place of Treasure
Gift Shop E-Commerce with Configurable Gift Box Builder
$ GiftBoxItem join model — products composed into configurable gift box products with item selection constraints; purpose-built data model for the gift shop use case
$ deploy --project xportal
HTTP/2 200 OK
XPortal
School Management System for Nigerian Schools
$ Multi-tenant architecture — a single deployment serves multiple schools with fully isolated data per school
$ deploy --project maville-diagnostics
HTTP/2 200 OK
Maville Diagnostics Suite
Portable Windows Desktop App for Laptop Inspection & Grading
$ All hardware queries run on QThread workers — the UI never blocks during WMI/PowerShell interrogation; failed queries return N/A gracefully with no crashes
$ deploy --project upl
BUILD IN PROGRESS
UPL League Admin
Football league back-office on Firebase: denormalized data model and validated Excel fixture import
$ 11 Firestore collections and 18 routes: modelled teams and leagues as many-to-many by copying team and player documents into league-scoped league_teams / league_players collections, because Firestore has no joins and each league needs its own independent standings.
Technical Arsenal.
Specialised in the modern cloud-native ecosystem — from backend architecture and real-time systems to automated DevOps pipelines.
Cloud & Infrastructure
Production infrastructure management across major cloud platforms
CI/CD & DevOps
Pipeline engineering, containerisation, and deployment automation
Monitoring & Observability
Production observability across logs, metrics, and alerts
Backend
API design, real-time systems, and server-side architecture
Frontend
Full-stack React applications with modern tooling
Databases & Storage
Relational and document databases, caching, and object storage
The Journey.
A track record of engineering reliability and shipping full-stack products for high-traffic media and enterprise SaaS.
Full Stack Web Developer
- ▸Root-caused and fixed a full-site 504 outage (23M pageviews/month) live over SSH in ~15 minutes — traced a host load average of 150 to pool-specific memory starvation via vmstat/docker stats, found two unrelated commits weeks apart silently conflicting on a memory ceiling, hotfixed production, and shipped the permanent fix to CI. Load average 150→23, container memory 5.97GiB→801MB, verified end-to-end
- ▸Ran a live, data-driven PHP-FPM tuning campaign after New Relic showed host CPU pinned at 84–99.6% for 24h+: diagnosed 12.5x worker oversubscription, cut it, then re-tuned against live /fpm-status data after the first cut proved too aggressive for real traffic
- ▸Cut editor publish latency from 36–45s (worst case 89s) to normal by tracing three independent blocking calls through New Relic — a synchronous 10s webhook call, a third-party plugin's 70s-timeout publish call, and an unindexed database query feeding an unused admin autocomplete
- ▸Root-caused and fixed a cascading four-bug production outage chain, each fix unmasking the next, measured live via error-rate percentages — one bug alone was hitting 99.98% of tag-archive page requests
- ▸Resolved a nightly sitemap-scraper stampede (15,000+ 504s, 2-hour outage windows) traced via RDS query analysis to a distributed scraper hitting 1,100+ sitemap files from 1,100+ rotating IPs — shipped nginx concurrency caps and file caching; zero 504s in the affected window afterward
- ▸Found and fixed a reflected XSS vulnerability in production PHP code, and installed the AWS CloudWatch Agent with a custom IAM role for real-time metric alerting via SNS
- ▸Diagnosed a mobile-carrier proxy silently injecting content into unencrypted HTTP traffic, hardened TLS (removed legacy 1.0/1.1), and configured Cloudflare WAF rules to restrict /wp-json/ traffic
Front-end / DevOps Engineer
- ▸Managed multi-domain AWS infrastructure for mhapy.com, portal.mhapy.com, and mhapy.ca — a mental health SaaS platform serving live users across Canada
- ▸Deployed and maintained web applications on AWS including EC2, S3, and CloudFront — configuration, cache invalidation, and environment-specific deployments
- ▸Designed and maintained CI/CD pipelines using Jenkins and GitHub Actions, reducing manual deployment steps and accelerating release cadence
- ▸Built and maintained the therapists' dashboard (portal.mhapy.com) — a React-based platform integrated with a Ruby backend mental health chatbot
DevOps Engineer
- ▸Managed cloud infrastructure ensuring platform uptime and deployment consistency across environments
- ▸Designed and implemented CI/CD pipelines automating build, test, and deployment workflows on AWS
- ▸Deployed and maintained web applications on Amazon Web Services
Front-end Developer
- ▸Built responsive web interfaces and integrated Paystack payment gateway into the e-commerce platform
- ▸Delivered pixel-accurate implementations from Figma designs using React and Tailwind CSS
Get In Touch.
Available for full-time roles and high-impact contract projects. Let's build something that matters.
Direct Email
Best for formal inquiries and collaboration requests.